Carbureter.



A. COSTA.

CARBURETER.

APPLICATION man p.11. 19:5.

Patented May 23, 1916.

.of various mechanical forms in which -ful Improvement in (larbureters,of whim.

' ing chamber.

cairn srarss ANTHONY COSTA, 0F CLEVELAND, OHIO, RY CLEVELAND. OHIO, ESNDFIVE-TVVENTIETHS IHS TO AMOS MCGHAW. BOT-$11 'O F'YOUNGS- KELLER,FOUR-TWENTIETHS TO HE TIETHS TO WILLIAM FAHEY, ALL 01 TO JAMES BOYLE ANDTVO-TW'ENTIZ TOXVN, OHIO.

SSIGNOR CF FOUR-TXVENTIETHS FATE @FECE.

TO FRED J. liiUEI-ILHAUSER. AND THREE-TVTEN- CARZ URETER.

Application filed February 11, 1915.

To all whom it may concern:

lie it known that I, AXTIIONY Cos'm. a. citizen of the United States,and a resident of Cleveland, county of -Cu "al'1o;1a, and State of Ohio,have invented a new and r the following is a specification, theprinciiiiie of the invimtion being herein explained and the best mode inwhich I have contemplated applying that principle, so as to distinguishit from other inventions.

'1 he present iniproven'lent-s relate in general to means for vaporizingliquid fuels and more Imrticularly to the provision of a devicegenerally known as a carburetor for vaporizing hydrocarbon fuels such asgasolene and kerosen and mixing the same with air for use in an internalcombustion engine.

In my improved apparatus I have eliminated the necessity for. a floatchandler which added considerable cost and size to the common types ofcarburetors, and was the source of occasional trouble by reason of thefloat valve sticking or leaking, thus causing improper regulation ofthe; flow of the liquid to the fuel supply nozzle in the mix- In my,improved device I have provided means for automatically and positivelycutting oil" the fuel supply except when the. engine is in operation.During such operation the supply of fuel is regulated according to thespeed of the engine, and is proportioned to the amount of air that isbeing drawn through the ap mratus, thus providing a constant and properpro portion between the amounts of gas and a" which are consumed.

To the accouiplishment of the foregoing and related ends. saidinvention, then. consists of the means hereinafter fully described andparticularly pointed out in the claims.

The annexed drawing and the following description set forth in detailcertain mechanism embodying the invention, such disclosed meansconstituting, however. but one the principle of the invention may beused.

u said annexed drawing: Figure l is a vertical section through myiu'iproved up paratus: Fig. 2 is an enlarged section on the line- 2-2Fig. 1; Fig. 3 is a section on the Specification of Letters Patent.

Patented May 3, 1916. Serial No. 7,488.

line 3-3, Fig. 1; Fig. 4 is a. horizontal-section on the line Fig. 1,and Fig. 5 is a partial section taken on the same plane as that of Fig.1, but showing a modified tvpe of valve. 0

in Fig. 1 there shown a mixing chamher,- 1, which may be of any suitabletype, in which there is provided an upstanding circular flange or collar2. Threaded into the upper end of such collar 2 is a fuel sup ply nozzle3 including a hollow disk 4 having radially disposed apertures 5 leadingrespectively to a number of vertically disposed holes 6 formed in theouter periphery "of the disk through which the primary air supply isadapted to be. drawnf 'Itwill be unnecessary to describe in greaterdetail the const laietion of the fuel supply nozzle. as any desired typeof nozzle may be used, the present type being illustrated merely for thepurpose of showing one of various ellicicnt means for vaporizing thefuel.

The chamber formed in the collar 2 is connected at its lower end withfuel supply conduit 7, which leads directly to. the main supplyreservoir, thus supplying fuel to the nozzle under considerable head byreason. of the fuel tank above the height of the carbureter. Theaperture nozzle is normally closed a plunger 8 attached at its upper endto the rocker arm or link 9 pivoted upon the pin 10 and connected atitsother end to a rod 11 which passes through a guide formed in the sideof the chamber and is provided at its lower end with a, disk 12. Againstthis disk there is disposed a sprii'ig 13, which operates against apivoted arm 14. The outer end of this pivoted arm is in contact with arod 15 upon which there is mounted a valve 16 normally seated by meansof a rather weak spring 17 operating against a lock nut 18 upon the topof the rod. 7

The mixing chamber 1 is provided with a waporizing the fuel, providedany fuel is ing chamber. The area of the port 21 is relatively smallsupplied to theradial conduits 5. Auxiliary air is supplied to themixing chamber through a port 25 formed in such extension 20 such portbeing normally closed by means of the valve 16 attached to the rod 15.The exact construction of this valve and of the mechanism connecting thevalve and the plunger closing the fuel supply nozzle have not beendescribed in detail as the same are no part of the present invention,being clearly described and claimed in a co-pend ing application of mineSerial N0. 878,861, filed December 24, 1914. For the purpose of thepresent description it will only be necessary to state that theauxiliary air valve 16 is normally maintained on its seat by a slightpressure exerted by the spring 17.

The other springs which are shown, such as the spring 13 and springs 26and 27, serve to take up any looseness in the connections, but are sobalanced that they have little or no effect on the operations of theconnecting mechanism between the plunger and the auxiliary air valve.There is provided a plate70 lying acrossthe opening 21, and forming abearing for the rod 15.

When the engine to which the present carbureter is attached is cranked,the suction of the pistons in the cylinders tends to draw air throughthe mixing chamber of the carbureter, such air being supplied primarilyby the port 21. During this operation auxiliary air valve 16 is closedand closure of this valve seats the plunger 8 thus com pletely closingthe fuel supply nozzle and preventing the admission of fuel to themixrimary ,air an when the engine is cranked even at a slow speed thisport does not admit sufficient air to the mixing chamber to maintain thenormal or atmospheric pressure therein. This ,reduced pressure in the'mixing chamber permits the greater atmospheric pressure without to openthe auxiliary air valve '16 which in turn raises the plunger fuel to thehollow center of the disk 3 and thus by way of the passage 5 to thevertical conduits 6 through which the priiriary air passes. The primaryair then vaporizes the liquid fuel and the same is mixed with this airand remixed with the auxiliary air which passes up through the mixingchamber outside of a circular'wall or flange 28 formed therein.Thetension of the spring 17 may be adjusted'by-means of the nut 18 forany desired operation of the engine. The auxiliary air and the'primaryair do not mix reach the mixing chamber. 1 since 21 and 25 are separatedin the wall 30. In this manner it is possibie to entirely eliminate theusual 'float chamber, since there is a positive closure for the fuel.supply nozzle when the engine is not operating, while during opergardsthe mechanism 8, thus admitting ation of the same the area of the fuelsupply nozzle is directly 'and automatically defect in the operation ofthe existing types of carbureters which has been a source of trouble instarting and in accelerating the engine to which the carbureter wasattached. The physical worlc required to draw the air into the cylindersof the engine was increased by reason of having to also raise the levelof the liquid fuel in the spray nozzle a certain distance, sinceobviously the normal level in the nozzle had to be below the dischargelevel to prevent overflow. This diiiiculty was, most apparentandconstituted a real defect upon starting themotor. In my device upon theopening of the valve in the nozzle, the pressure on the liquid thereinforces it up and outward into and across the path of the incoming air.'The flow of liquid is instantly responsive to nozzle valve but inno wayaffects the operation of the remainder of the device nor increasestheburden on result that the engine starts rapidly and smoothly and canbe accelerated in speed in the same manner. Y

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as reherein disclosed,provided the means stated by any of the fol lowing claims ortheequivalent of such stated means be employed.

I therefore particularly point out anddistinctly claim as myinvention 1. In a carbureter, the combination of a mixing chamberprovided with an air opening, ayvalvenormally closing such opening and otried upon the decrease in pressure in said said chamber,'resilientmeans normally closing each of said valves, and other resilient meansconnecting said valves and adapted to normally tend to maintain-each inclosed position said means being also adapted to correlate openingmovement of said valves.

In a carbureter, the 'combinatipn of a mixing chamber provided with anair opening, a valve normally closing such opening and openedupon insaid chamber, a said chamber, mally closing each of said valves, andother resilient meansnorinally tending to mamfuel nozzle mounted inamber, and a final nozzle mounted inseparate resilient means northeopeningof the the engine with the the decrease in pressure ing, a valvenormallv closing such adaptof said lain said valves in closed positionand ed to correlate opening movement valves.

3. a carbureter, the combination {of a mixing chamber provided withan-"air opening, a valve normally closing such opening and opened uponthe decrease nr,pressure; mounted in in sai chamber, a fuel nozzle saidchamber, a spring operating against each of said valves to normallymaintain it in closed position, a memberattached to each of said valvesfor opening the same,

said members having a resilient one-\va v connection therebetn'een,permitting correlation vof the movements of said valves.

4. In a'carb'ureter, the combination of a mixing chamber provided withan air openopening and opened upon the decrease said chamber, a fuelnozzle mounted in said chamber, said valve opening upon movement inopposite directions, a lever con neeted to such nozzle valve, a

' against such said first named its a. :is from said operating againstlever on the other side of nozzle valve and a spring see-mid lever saidrod and said second lever and arranged to normally exert pressuretending to close both said valves.

5. In a earbureter, the combination of a mixing chamber provided witlranair opening, a valve normally closing such opening and openeo upon thedecrease in pressure in said chamber, a fuel nozzle mounted in saidchamber, a valve normally closing said nozz-le said valves opening uponmovement in opposite directions, a lever connected to such nozzle valve,a second lever bearing at its free end against such air valve, a rodconnected to said lirst named lever on the other side of its axis fromsaid nozzle valve, springs adapted to norn'ially seat each of saidvalves. and another spring operating between said rod and aid secondlever and arranged to correlate movement of said valves.

Signed by me, this 15115.

A N'rnoNv COSTA. A ttested b y- A. L. GILL, D. T. JMvncs.

9th day of February

